Fuel-feeding device for internal-combustion engines



l N. LIVIBARI).

FUEL FEEDING DEVICE FOR INTERNAL COMBUSTIN ENGINES.

APPLICATION FILED APR 21, 1919.

Patented @10.21, 1922.

Y L O ,application filed ripidi ci,

Be it known that l', NATHANIEL Lor/Icann, a citizen ci the United States, residing at Worcester, in the county of VJorcester and oinnionwealth oi ll/.l'assachusetts, have invented a. new and useful improvement in a Fuel-Feeding Device for internal-Combosv tion Engines, 1ol which the following, to! gether with the accompanying drawings, is

specication.

Myinvention relates to fuel feeding dcvices for internal combustion engines by means of which fuel is delivered to the car- -burcter or" the en 'ine from a fuel su)y iv .i

e'nl located beiow the level of the carbineN ter, the operation oi" the device being dependent upon the suction or vacuum created by the pistons of the engine.

The object of my invention is to provide feel feeding device that is extremely sinim pie in cnzistruction and reliable in operation, end by ineens ci which continuous supply' o?? fuel from the supply tank to the carbureter is insured.

Fuel feeding devices of the suction. or vacuum tyje, as heretofore constructed, have usually comprised a float member adapted io operate valves, for controlling the flow of fuel through the device, by means oi a linlmechanism 'for transmittingthe motion of the *lio-au to the valves.. lt has been found I that fusi, feeding devices of this character f ber is provided Wn; y

are not always reliable in their opera-tion, owing to the fact that the float is liable to lea-ir, or thinL the valve mechanism' liabie to out of order., thus causing device Vto 'become inoperative and interrupting the suply of :nei to the carburetor.

A i y invention, i provide a incl ieeding device r tions.

Spcciceticn of Letters i9l. Serial Zi'o. 292,523.

the operationV of the device may always be c :served the accompanying drawings,

Figure l is a transverse sectional view of my device, showing the parts in the positions which they occupy when i'uel is being drawn intothe device from the supply tank.

Figure is a sectional view similar to Fig. l, showing the parts in which they occupy when fuel is being transferred from one container to another.

Figure 3 is a vien7 in side elevation showinq a portion of the parte shown in Fig. 1.

ilre reference characters refer" to like parte in the different figures;

Referring to the drawings, the device comprises a cup shaped base 1 thatis integral with or otherwise secured to a pipe connection 2 which is adapted to receive the end o av pipo leadinrgy from a suitable fuel supply tank, not shown. The connection 2 is provided with a centra-l opening 3 and ain en- (red e2, within 'which is located a bail 5 that serves as a check valveclosure for the opening 3. A casing 6, preferably composed of glass or other transparent material, iscarried upon a shoulder l of the base l, and a topy 7 similar in form to the base l serves to close the upper endl of the casing 6.. The base 1 the casing 6, and the top 7 constitute a fuel supply chamber 8 that is open to suitable aperture 9 provided in the top 7.

A. vertical spindle or rod l0 is centrally ,located wit chamber 8 and projects through suitable openings provided inthe base l and the Atop 7. The lower portion of the rod 1G is provided with, a central opening ll extending from the recess 4 to apoint' 'substantially haii' waynp the rod. The rod Il() is surrounded by a sleeve i2 that is slidable withv respect thereto, and is provided with pluraiity oi radial ports 13 communieating with anh annular duct 14kprovided on the rod l0. The lower portion of the duct le is connected to the opening 11 by radial' ports l5, so that a continuous passage from the recess i to the ports 13 is provided, with the Iparte in the position shown. A substantial y spherical casing i6 is mounted on a shoulder l2 of the sleeve 12 at a point adjacent to the ports 13 'and extends substantialiy eo the top of the sieeye 12. The upper portion of the rod l0 is pnovided With a een# openingn l? and an annular groovel 18 the positions v the atmosphere through a which s connected io tile open by e poi T' enfl of provided vf in port 2G ansi e groove i8 when the peilt, tion shown in l. The rod provided with an annuler ducs which communicates by means of n poil; Wiib a mbe 25 extending bluoughthe casing' 'lo io e point wiiliin tbe chamber 8, and with ieiiel ports located below com'cspondinglyai'- .ongeii poi-is in tile sleeve. The opening l? of tbc rod 1G is adopted to be connececi by suitable iibing, not shown, foibe inici/:e ine-Infeld of on internal combustion. engine.

The sleeve i2 is adapted so bei@ in elle position shown 'in l by means of omis in engegemen. wish the projection i2 of zlie sleeve The aims 26 1i-e pivobzilly connecied :1i: iiein lower ends to levers 2?? mounted on the ioii l by pins 28. The levers 27 are normally held towaifi each o'bci by ineens of springs 29, thus tending izo maintain *abe sleeve l2 in its upward posisition tliiougli elle action of the arms 26. The 26 and the levers 27 constitute o pair of oggle joints, 'elle action of which will be hei'einefer desciibcci.

Hoving clesciibefi the paris eniciing into inveniiom bhe operation thereof is es i'ollovmwissuming time 'ille pai-ts oc-` iuntliei copy 'the posiion shown in l, :iiiL Witb-V in 'lice casing l@ 1s fliewn ont tbiongh opening i7, by means of tbc suction produced by the pistons of the engine. yllois suction causes bbc :fuel to ow :from elle supply pipe pesi 'tbe bali 5 and through the opening il to tbe ports i3 leading into casing i6, es inciicaizefl .by ei'i'ows.- As soon as alie vleig'b'lf.- of blie fuel in the cesiiigg 16 overcomes the ension of be spi'ings 29, ille 16 ngel-bei wiib tbe sleeve l2 stems o move downwardly on tile i'ocl i0. As soon as the sleeve l2 sterbe izo move, die post 20 ceases io iegistci Wiizbxbc groove 8$ thereby ofi' 'lie siicbion fiom @tbe casing; i6 and ellowinodie bail 5 to reurn lio its seni: to prevent one beck iiow of uei. The sleeve i2; continues its fiownwerd movemen until tbe poi'izs Q4 regise xvii-b tbe ports 25 and lic port 2O iicgisteis witb clie elliot 2l. At this peine elle casing i6 is open 13o atmospbeiic piessnic -bougli tbe eube and tbe por's mail 21') whereupon 'lle 'fuel wiibin l i asses 1b.ioogb *che poiits 13 flieporte emi sind bencc ino i' 8, indicobefi by arrows in fom che chamber 8 the fuel 'flows *fio lie coi'buietci ibiongb a suitable supply pipe iocetei as be bottom of the chamber 8. The acion oi lie toggle joins formed by bbs omis 26 enilie levers 27 causes tbe l "e io 'osibiveiy operaie :is soon es e pice- Mcionnf of ifnei eccumulaefi 27 move ou'bweidly, thereby increaslglie lever firms tbougb. which be combinecl Wsigbs of tbe casing and lie foei lieiein ece ege-ainsibe springs Conseql'uengsly when he casing 16 once starts to move downwardly it passes from 'tbe position shown in Fig. l to the posigion shown in Fig. 2 with one continuous movement,ior the combined Weights of the casing and fuel. :1re always sufficient to overcome the rcsisiance of ine springs .29 owing; to the increased levciege. The casing 16 i-elsui'ns to ibs originel position after discharging tbe fuel zi'ieiein with e coninuous npweifdinovemn owing to the constantly decreasing 'fonce ef:- eite by che Weight olf the casing in its up- Wei'cl movement. As result of the obovei) {lcscribecl action the Valve ponts are always eialier enii'ely closed oi' entirely open.

From tbc foregoing, it is oppeien 'time the chamber 8 will be continuously supplied with fuel by the successive iilling and emptying of the casing1 16. in case the' fuel is supplied to the c L:imber 8 faster than it is consumeci by the cal'buieter, the spherical casing l will bend to balance upon. Aalle fuel' in the chamber and pfevcnt 'the porfis 24 imei 25 from regisbcring' and permittino' any eddii-ional fuel to iow into tbc chongqer 8. it is also appuient that my device sompi-ises no complicated velve mechanism that is iiable to get out of order and that. the spbei-icel form of the casing 16 practically eliminaiss any possibility of ib becoming jammed Within 'lle casing 6. 'The opei'eion of the device es o whole is also open @to inspection el; all imes tbi'ougli the transparent casing f emi be sliding valve members cen be O readily removed for inspection by merely iemoving the iop and. pulling out tbe valve rod 10 and its sleeve l2.

l. In @fusi feeding device, e fuely conminei' mounted on o veiwicel spindle, enfle,

second fue] container iocezed Within loey first named con'lsineiand carieci on :i sleeve in. sliding engagement Winb. said spindle, the seid spindle and the said' sleeve being provided with velve passages for controlling the How of fuel between said containers.

in fuel feeding device, a vertical spindle surrounded by e fuel chamber, emi

e sleeve slielably mounted on seid spindle and spimlic cnil licseifl sleeve being" provided wib velvc passages for controlling the flowl of fuel between said container and seid chamber, as said container moves under the force of gi'aviizy.

3. ln a 'incl feerlingfleviceihe combine- :ion with :1` vertical spindle surlounfied by e incl chamber and sleeve siidebly mounted on scifi spindle and carrying a. 'fuel con-- i. in, oi" means for exhausting' ion ,e1-Irvine a. fuel conainei' lie said Leonesa said container at the top of said spindle and check-valve controlled means for admitting' fuel to said container at the bottom of said spindle.

4f. ln a fuel feeding device, the combination with a vertical spindle surrounded by a fuel charnoer and a sleeve slidably mounted on said spindle and carrying a fuel containcr. of means for admitting air under atmospheric pressure to said container at.

the top of said spindle, and for connecting' said container to said chamber at'a point intermediate the ends of said spindle.

ln a fuel feeding device, the combination with a vertical spindle surrounded by a fuel chamber and a sleeve slidably mounted on said spindle and carry/'ing a fuel container, of valve passages provided in said spindle and in said sleeve respectively for exhaustingV air fron'i said container and' for admitting fuel thereto in one position of said sleeve relative to said spindle, and for admitting air under atmospheric pressure to said container and for connecting said container to said chamber in another position of said sleeve relative to said spindle.

6. ln a fuel Afeeding device, a movable fuel container provided with means for exhausting air at the top thereof, and for admitting fuel at the bottom thereof.

7. ln a fuel feeding device, the combination with a fuel chamber and a relatively movable fuel container located therein, of means for exhausting said container and admitting' fuel thereto in one position of said container', and separate meansfor admitting` under atmospheric pressure to said container, and for connecting said container to said chamber in another position of said` container.

8. ln a fuel feeding device, the combination with o fuel chamber and a relatively iovahle fuel container located therein, of suction-operated means for accumulating f icl in said container' in one position thereof,

whereby a predetermined accumulation of fuel Will cause said container to move within said chamber to cut olf said suction-operated means, and to cnnect the interior of said container to the atmosphere and the outlet of said container to the said chamber.

9. .ln a fuel feeding device, the combination with a fuel chamber and a relatively movable fuel container located therein, of suction-operated means for accumulatin fuel in said container in one position thereo. whereby a predetermined accumulation of fuel will cause said container to move within said chamber to out off said suction-operated means, and to discharge the fuel into said chamber at atmospheric pressure.

l0. In a fuel feeding' device, thei'combination with a fuel chamber and a vertically movable fuel container located therein, of means for opposing downward movement of said container upon the accumulation of fuel therein, the weight of said container and fuel acting` through an increasing lever arm against the opposing means as said container moves downwardly.

1l. In a fuel feeding device, the combination with a fuel chamber and a vertically movable fuel container located therein, of a spring actuated device for opposing downward movement of said container upon the accumulation of fuel therein, the Weight of said container and fuel acting through an increasing lever arm. upon said device as said container moves downwardly.

l2. ln a fuel feeding device, the combination with a fuel chamber and vertically movable fuel container located therein, the.

movement of which controls the flow of fuel from said container to said chamber, of a spring-actuated toggle device for maintaininfr said container in its upper position.

i NATHANEL LOMBARD.

Witnesses Pnivnnorn eConeness.on, NnLLin Wiesheu 

